Wastewater treatment in flow photobioreactors continuous illuminated by artificial and solar light
DOI:
https://doi.org/10.33448/rsd-v9i6.3748Keywords:
Combined lighting; LEDs; Microalgae; Photoperiod.Abstract
The technology of microalgae photobioreactors and illuminated by LEDs has been widely studied for the treatment of wastewater. However, sunlight is a free resource and should be taken advantage of. But the question remains whether photobioreactors illuminated by natural (sunlight) light in combination with artificial light can have greater operational stability or greater performance when compared to systems illuminated only by artificial light. In this context, continuous flow photobioreactors illuminated by Light Emitting Diodes (LEDs) combined, or not, with sunlight were operated and had their performance evaluated. The variables analyzed were pH, OD, chemical oxygen demand (COD), chlorophyll - a and total suspended solids. The photobioreactors were effective for removing organic matter, with 75 ± 15% in the photobioreactor illuminated by LED and 65 ± 10% in the photobioreactor illuminated by sunlight and LED. The results showed that the use of combined lighting favors the production of dissolved oxygen and ensures greater operational stability in the removal of carbonaceous organic matter.
References
APHA- American Public Health Association/ American Water Works Association/Water Environment Federation (2012). Standard Methods for the Examination of Water and Wastewater. Washington DC, USA.
Atta, M., Idris, A., Bukhari, A., Wahidin, S. (2013). Intensity of blue LED light: A potential stimulus for biomass and lipid content in freshwater microalgae Chlorella vulgaris. Bioresource Technology, 148, 373-378. doi:10.1016/j.biortech.2013.08.162.
Bicudo C.E.M. & Menenzes M. (2006). Gêneros de algas de águas continentais do Brasil: chave para identificação e descrições. São Carlos - SP: Rima.
Chevremont, A. C., Farnet, A.M., Coulomb, B.; Boudenne, J.L. (2012). Effect of coupled UV-A and UV-C LEDs on both microbiological and chemical pollution. Science of the Total Environment, 426, 304 - 310. doi: 10.1016/j.scitotenv.2012.03.043
Eland, E. L., Davenport, R., Mota, C. R. (2012). Evaluation of DNA extraction
methods for freshwater eukaryotic microalgae. Water Research, 45 (16), 5355-5364. doi: 10.1016/j.watres.2012.07.023
Godos, I., Blanco, S., Encina, P. A. G., Becares, E., Munõz, R. (2009). Long-term
operation of high rate algal ponds for the bioremediation of piggery wastewaters at high
loading rates. Bioresource Technology, 100 (19), 4332 – 4339. doi:10.1016/j.biortech.2009 .04.016.
Gonçalves, R. F. (Coordenador). (2003). Desinfecção de efluentes sanitários. Rio de
Janeiro: ABES, Rima.
Hwang, J., Church, J, Lee, Seung, J, Park, J, Lee, W H. (2016). Use of Microalgae for Advanced Wastewater Treatment and Sustainable Bioenergy Generation. Environmental Engineering Science, 33 (11), 882-897. doi: 10.1089/ees.2016.0132
Lourenço, S.O. (2006). Cultivo de microalgas marinhas: Princípios e aplicações. São
Carlos - SP: Rima.
NUSH, Nederlands Norm (NEN 6520). (1981). Norma holandesa sobre determinação de clorofila a pelo método do etanol.
OEDC - Organization for Economic Co-operation and Development. (1996). Guidelines for testing of chemicals simulation teste-Aerobic sewaget treatment. Technical Report, Paris.
Olguin, E. J. (2012). Dual purpose microalgae–bacteria-based systems that treat wastewater and produce biodiesel and chemical products within a Biorefinery. Biotechnology Advances, 30, 1031–1046. doi: 10.1016/j.biotechadv.2012.05.00.
Park, J. B. K., Craggs, R. J., Shilton, A. N. (2011). Wastewater treatment high rate algal
ponds for biofuel production. Bioresource Technology, 102 (1), 35 - 42. doi: 10.1016/j.biortech.2010.06.158.
Park, J. B. K. & Cragss, R. J. (2011). Nutrient removal in wastewater treatment high rate algal
ponds with carbon dioxide addition. Water Science and Technology, 63 (8), 1758–
doi: 10.2166/wst.2011.114.
Pilon L, Berberoglu H, Kandilian R. (2011). Radiation transfer in photobiological carbon dioxide fixation and fuel production by microalgae. Journal of Quantitative Spectroscopy and Radiative Transfer, 112 (17), 2639 - 2660. doi: 10.1016/j.jqsrt.2011.07.004.
Schulze, P. S. C., Barreira, L. A., Pereira, H.G. C., Pareles, J. A., Varela, J. C.S. (2014). Light emittig diodes (LEDs) applied to microalgal production. Trends in Biotechnology, 32 (8), 422 - 430. doi: 10.1016/j.tibtech.2014.06.001.
Silva, L. M. L., Santiago, A. F., Silva, G. M. Z., Vassoler, F., Braga, M. C. R. (2017). Tratamento de efluentes em fotobiorreatores iluminados por diodos emissores de luz (LEDs) de baixa intensidade luminosa. Revista AIDIS de Ingeniería y Ciencias Ambientales: Investigación, desarrollo y práctica,10 (1), 87 –103. doi: 10.22201/iingen.0718378xe.2017. 10.1.54836.
Unnithan V.V., Unc A., Smith G. B. (2014). Mini-review: a priori considerations for bacteria-algae interactions in algal biofuel systems receiving municipal wastewaters. Algal Research, 4, 35 – 40. doi: 0.1016/j.algal.2013.11.009.
Wang C. Y., Fu, C. C., Liu Y. C. (2007). Effects of using light-emitting diodes on the cultivation of Spirulina platensis. Biochemical Engineering Journal, 37(1), 21 - 25. doi: 10.1016/j.bej.2007.03.004.
Yan, C., Luo, X., Zheng, Z. (2012). Performance of purifying anaerobic fermentation slurry using microalgae in response to various LED light wavelengths and intensities. Journal of Chemical Technology and Biotechnology, 88 (9), 1622 - 1630. doi: 10.1002/jctb.4010.
Yan, C., Zhang, L., Luo, X.; Zheng, Z. (2013). Effects of various LED light wavelengths and intensities on the performance of purifying synthetic domestic sewage by microalgae at different influent C/N. Ecological Engineering, 51, 24 - 32. doi: doi.org/10.1016/j.ecoleng.2012.12.051.
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